1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a39b9a99ac70af8a4809027823f8671fc5a370096e783ea772aa195ff936ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/746c44d3-389f-4f77-b3e5-f08ecfe366b1.json and https://artists.proofprofile.net/proofs/artist/746c44d3-389f-4f77-b3e5-f08ecfe366b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fresh up off da Block (feat. Killatwan, Newport & Nogood)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37813e65e2494d7ac1bdf9b3ca2025c73a911cd7c74e534512d09da00999466b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADO1822766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed61355243c42c4bfcdd1b8b4b55bb345f11b2427fb5d31497765bd3a9244b2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADO1822787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb12bdc3df73ee3ba585b4ab1e1d74b384c34c47928e57e2dc85e707d2874f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADP1816220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8278b7cd5e866708b0c81a8abe7d35acce102f58027890b01f481c11a3cb23fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1811972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450e6c7ad676703a697665858c5c63f73ced2a319b3afb012a99e9261c90a2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1832492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79d808064ec6f7ac2a318b5d7da44823ec09039b30328ed8bc0adf7def65b2d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:59:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1832512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db31a70fc99adafa2ddbe864ee31ab9736e7fb16b313e8ec6305a829be4db5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1832520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45761f22f67b04c15831c0ad619c517a256e1494a42321a213043b8de9fc8797. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2049706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2feef4966fd7909dff95bd95491b313ebd781c6c964bfa1182421f71215a8e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62208653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f90e497dbaccfff3d070cd96022d9436cd5e54cd6825f0203b86cf9c80fde0a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ52021688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c85bf2fe2a7a5c5531de55ff613120c295bbdc64fef1348db66cab2f2247b76. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62208655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3ba8a80519912b86816d18d15b1c16a5422ac4f719aef8a92f3dc0fd7b4a8b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM2334488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f445807d561c44055f5709792873a67de213475b127fb34c58b5ef5ce4ab7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM2348620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3b169cfa81bfe73a8a09f81a1e810624be0bf6117b91c15807892d0d9f89ce. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82471359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f218ec1e785d84f549118e7c572f4eed94a8e4651168147ddc4406c18208055. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2433697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f42b730f16fc9c30373922a273c08afe0759870799d46c72ef20f5b0c0c979. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1873777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc697656ecbf98f9c76218c38d6bc26b276ccd52db59598e3b7b85b43879d07. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1873778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3acd2cc77c43a8017b7e1341ac0091cb6395d6b2f04ce3abe9c7c552ee98079. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1873779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a814897e6025b78ec721eda3f7623e44118fd54b61d81deb54cccf96c0a5e8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1873781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d330324abb0318d6bfd340ef74710b0125930beb0f47bcd5834a0d6b150c93. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52505266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0addc7903416a72d601db4b36ef3d305a2c6be32534f32115187ee436b0ff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABY1404328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7ee388fa986ac8bb1cda730cb6cb8b24cf5f81c21c42e5937cfaed069684f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1898485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9361e57fad7e95b2f87eb41b5bc4d3f9676d8e724b1cbd71ea75ec5fa51bf796. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2429790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22274be3b1998fd45994815c5e343cec23e92ce266a058f1adf446eaa7c75b72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62065236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a407416f30c4106085ede1e913c0e900cffbbf45b3571bfd6db291b0e3da5cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62065239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd644392a065534b410c309f5bbee5507d4b2e90bfe3aa95b315d08fd6144c67a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62065242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b8a45861204af08729a3217bf416824d6eb5ca8300588248b4ddf5a92639f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLD91761609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f1336bc97b36f9b3b2318999df9a6651bddaae390b761aa4d10b319b533551. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2251594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e0504f88015ba38fdd8a06c7c2c2ed865a64abdcacc3006654f70838960368. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6M2252004.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb9d6ecf7fd4c5be187a6085c668d46e0717881de24b5cea76276fe9bbdae7b. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0007796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c247af7e1a5b53f966439649e4861ea8e7c133a1b4500e291b855dc45e7b59f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62208644.